Most physicians believe that the symptoms of TTN are related to poor clearance of fluid from the newborn's lungs. Babies with TTN have extra fluid visible on chest x-ray. Diuretics, medicines that can help clear extra lung fluid in adults and in babies with extra lung fluid for other reasons, do not to help babies with TTN. Babies with TTN need intravenous fluids to be healthy because they breathe too fast to be able to eat. Breastfed babies only get a very small amount of fluid in the first few days of life, as it normally takes several days for a new mother to begin producing breastmilk. No one has yet examined whether giving babies with TTN an amount of fluid similar to the small amount they would receive if they could breastfeed would help them recover from TTN faster.